@lemmy101 For era editing, I found a remote number in the TechTree.lua on lines 520 and 527 that referred to the number of eras there are to make the game run that loop that many times to display the eras. I'm not sure if you had checked or skipped over it or even added it to the program's functionality but after seeing how you tore apart Ekmek over a tiny detail for NexusBuddy, I thought I might say something because you're focusing all your attention on the XML and SQL but haven't mentioned anything about the Lua. Anyway, one functionality you might want to add to the VTTE is an Undo/Redo ability. After deleting one too many techs I noticed I deleted something that I needed and would hate to try to get it back the long way. Also, I noticed I couldn't delete prereqtech lines that are already there, just the ones I add during that session.